What happens if you try to use the node insertBefore () method to insert a node that already exists in the document IE is already attached to the DOM?

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What happens if you try to use the node insertBefore () method to insert a node that already exists in the document IE is already attached to the DOM?

When you add a meaningful mailbox in Outlook for Mac, you may see an “Account already exists” message. Basically, this error occurs when you try to add your mailbox from the main Add Digital Account window. Close the error panel and return to the main accounts window.


When a window is fully loaded with an